Breaker

Abstract

A breaker comprises a shell and further comprises a handle, an operating mechanism and a tripping protection mechanism which are arranged in the shell. The operating mechanism comprises a connecting rod and a jump pin, one end of the connecting rod is connected with the handle, the other end of the connecting rod is connected with a movable contact, and a hinging shaft penetrates through the handle and the connecting rod to hinge the handle and the connecting rod; and the jump pin is mounted in the shell in a pivoted mode and provided with a hasp part matched with the tripping protection mechanism in a lapping fit mode, and a power part matched with the handle, and the power part is connected with the jump pin through a reset spring; and the connecting rod and the handle are connected through the hinging shaft simultaneously penetrating through the connecting rod and the handle. Assembling is convenient, automated assembly is convenient, the connecting rod and the handle can also be mounted integrally and then mounted in the breaker; and in addition, a hinging groove is formed in the handle, a hinging arm of the connecting rod penetrates through the inner sides of two power arms ofthe handle to extend into the hinging groove, thus assembling is convenient, and transmission is more reliable.

Description

Technical field [0001] The invention relates to the field of low-voltage electrical appliances, in particular to a circuit breaker. Background technique [0002] The circuit breaker is an important part of the electrical industry and has been widely used. When the electrical circuit is working normally, the circuit breaker can close or disconnect the circuit that supplies electrical energy to achieve functions such as power outage, power supply and circuit conversion; When the circuit is overloaded and short-circuited, the circuit breaker will trip to cut off the electrical circuit to avoid the safety of the staff and the normal operation of the equipment due to the circuit failure. [0003] The assembly of the operating mechanism and the handle of the existing circuit breaker is too complicated and requires manual assembly, resulting in too low assembly efficiency, which does not conform to the trend of intelligent manufacturing and automated assembly advocated by our country. In...

AI Technical Summary

Problems solved by technology

[0003] The assembly of the operating mechanism and handle of the existing circuit breaker is too complicated and needs to be assembled manually, resulting in low assembly efficiency, which does not conform to the trend of intelligent manufacturing and automatic assembly advocated by our country.

In addition, the existing circuit breakers usually fix the movable contact on the connecting rod of the operating mechanism. As the current specification increases, in order to reduce the temperature rise of the product, the requirements for the thickness and width of the contact structure also increase accordingly. Leading to an increase in part materials, higher production costs, and a larger space occupied by the product

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